MSNBC Medical Contributor Dr. Vin Gupta explains Princess Kate's preventative chemotherapy and what that means. "We can see survival rates as high as 80%, 90% at five years with this type of early initiation of chemotherapy." | MS NOW

Dr. Vin Gupta, a pulmonologist and an MSNBC medical contributor, reacts to Florida Surgeon General Joseph Ladapo’s announcement that the state will work to eliminate all vaccine mandates. “...to do this really is just all performance. There’s really no substance to it,” Gupta told @nicollewallace. | MS NOW